NAK80 is a precipitation hardening steel for high-grade mirror plastic molds. ⑴. After solution treatment and age hardening, the hardness is able to reach up to 37-43 HRC. Able to be used in the original state without heat treatment. ⑵. Ni-Al-Cu is an age hardening steel. Great machinability. Easily polished after electro discharge machining (EDM). […]
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Sequential mold opening mechanism: There are nylon lock, EM lock and mechanical lock, mainly applicable to 3-plate molds, to control the mold opening sequence, and ensure that the core and the cavity don’t open when the switch plate bounces.
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Selection of Gate Types for Commonly Seen Plastic Products 1. Axially symmetric products, such as gears, blades and the like have a higher rotational speed during operation, so the surface should be smooth and flat without air bubbles, to ensure resistance to wear. Such products require that the functional surface (usually the sides) should not
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A good mold factory is able to create excellent quality mold , while guaranteeing a remarkable profit, so there must be something unique and special that make it stand out, e.g., a robust system, a highly efficient team, a super strong implementation capacity, as well as the spirit of innovation. This article mainly explains the
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The most basic costs of a plastic injection molding part mainly include: Raw material cost, mold sharing cost, equipment depreciation & sharing cost, processing (water & electricity) cost, labor cost, site rental and other overhead costs; Now we are going to analyze the cost structure of a plastic part with a specific example: Assumptions: Product:
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The cost of a plastic injection mold includes: material cost + design cost + processing / manufacturing cost + others The material cost includes: mold core steel + mold base (S50C) + electrodes + standard spare parts + hot runner Commonly used mold steels: S136, NAK80, 2344, 2733, P20, 718, SKD11 and SKD61 1
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There are two reasons why many companies are reluctant to use ultrasonic profilers. For one thing, the profiler doesn’t always appear to be cutting on the first try. The second reason is the high cost of such machines. The truth is that in the hands of an experienced veteran, an ultrasonic profiler can easily cut
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Gisbert Ledvon If you build a multi-cavity with a large surface area in each cavity, consistency in surface finish and surface integrity is a must. Otherwise, you will get surface finish differences on the molded parts and may have difficulties ejecting the parts from the cavity. However, large surfaces that are EDM’ed via diesinking often
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It’s the age-old story. You win a mold contract, you work on the designs, the measurements and the tolerances, and then you think you have it all together and you’re ready to roll. But are you? More times than not, customers come rushing over or calling on the phone with an urgent polishing and plating
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You must produce a rib style cavity using an electrode that is ten thousandths at the tip plus one degree draft per side. Then burn to a depth of minus 1.1000 inch into a piece of 420 stainless steel – no through or side flushing is used on this cut. The project requires a surface
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